This 16" Super Duty rifle features a Nanoweapon coated Surefire Closed-Tine Warcomp mounted to an in-house 16" Mag Phosphated Cold Hammer Forge, Chrome Lined, 1-7 twist Geissele barrel. Exclusive to the Super Duty 16" Rifle is the SSA-E X with Lightning Bow trigger. This nanocoated, two-stage trigger features a wide body and bow shape that finds the perfect balance between a classic M4 trigger and a flat body trigger. The Super Duty lower is precision machined from 7075-T6 aluminum and features Geissele's Ultra Duty Lower Parts Kit featuring our Ambidextrous Super Configurable safety and Ultra Precision trigger guard. A high quality mil-spec Geissele Buffer Tube with a Super-42 in H2 buffer ensures this rifle is properly tuned out of the box. Rounding up the package is a 15" MK16 Super Modular Rail, that mates to the Super Duty Upper Receiver via a center aligning tab that removes any chance of rail rotation.